Scientists have confirmed that Enceladus, one of Saturn’s moons, has a watery ocean.
6
The Sun and Moon appear to be the same size because the moon is 400 times smaller than the Sun, but 400 times closer to Earth.
13
The temperature of the earth's interior increases by 1 degree every 60 feet down.
115
The typical spec of dust that you see floating in the air is half way in size between the Earth and a subatomic particle.
131
Earth is the only planet in our solar system that's not named after a god or goddess.
17
The heart of an astronaut actually gets smaller when in outer space.
216
The Earth gets 100 tons heavier every day due to falling space dust.
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